Deck drain system
    21.
    发明授权

    公开(公告)号:US11021864B1

    公开(公告)日:2021-06-01

    申请号:US16879201

    申请日:2020-05-20

    发明人: Olaf Mjelde

    摘要: A modular deck drain system comprising a bottom channel and an upper cover. The bottom channel has a pair of opposed side walls and a bottom surface coupled to the side walls. The bottom channel also has a plurality of stabilizing members coupled to and extending from an external surface of the bottom channel, and at least one modular junction node. The upper cover is configured to couple to the bottom channel. The upper cover has two upper walls, each wall having a top end and a bottom end, and the top end of each wall is coupled to an upper lip. A narrow top opening is formed by the upper lips. The upper cover has at least one cutline.

    Centrifugal pump
    22.
    发明授权

    公开(公告)号:US11408441B1

    公开(公告)日:2022-08-09

    申请号:US17525139

    申请日:2021-11-12

    发明人: Olaf Mjelde

    摘要: A centrifugal pump to improve the efficiency of fluid flow r, and minimize long term wear on the pump by progressively increasing fluid pressure as fluid moves from an eye of an impeller towards diffuser blades, into the volute and out through a outlet. The fluid pressure is increased by progressively increasing the volume through which the fluid travels. A tear-drop shaped volute casing surrounding the diffuser and impeller creates a pocket of maximum pressure just below the outlet. A dampener can be provided to dampen the vibration of the motor. A cylindrical basket strainer can be provided with a flat face abutting against the volute casing to distribute pressure evenly, A clamp ring can be provided to easily seal and access the basket strainer using a plain rod.

    Low profile circular drain with water stop for swimming pool and diverter for use therein

    公开(公告)号:US11384556B1

    公开(公告)日:2022-07-12

    申请号:US17386363

    申请日:2021-07-27

    发明人: Olaf Mjelde

    IPC分类号: E04H4/12

    摘要: A sump drain for installation in a surface of a swimming pool or spa, the sump drain comprising an annular chamber having a contiguous annular top opening, a plurality of outlet ports, an inner and an outer water stop, a plurality of diverter plates configured to removeably couple to an inner surface of the annular chamber, each diverter plate comprising two opposed ends and a bottom surface having a plurality of louvers, wherein one diverter plate is placed over each outlet port, and a grid cover configured to cover the chamber, the grid cover having a multiplicity of openings. The diverter plate can be curved along its length and have a central opening, optionally in the shape of a cross.

    Low profile circular drain with water stop for swimming pool

    公开(公告)号:US11268291B1

    公开(公告)日:2022-03-08

    申请号:US16932310

    申请日:2020-07-17

    发明人: Olaf Mjelde

    IPC分类号: E04H4/12

    摘要: A sump drain includes a ring-shaped chamber having an inner sidewall with a diameter of at least about 18 inches and an outer sidewall, and a circular opening between the sidewalls preferably about an inch wide and optionally having a grid cover. Preferably the inner sidewall has a number of ports extending inwardly to radial conduits to a central hub for tying into a pool or spa filtering system, with the central hub operating as a clean out and having a removable cap. Upon installation, plaster substantially fills the space between the chamber and the central hub, such that the sump drain attractively blends in with the pool or spa floor. When installed, the top opening is preferably substantially flush with the pool or spa floor while being safely unblockable. And the sump drain preferably further includes channels both outboard and inboard from the chamber top opening and around the central hub, to help prevent water from passing through the plaster into the shotcrete of the pool or spa.

    Low profile circular drain with water stop for swimming pool and diverter for use therein

    公开(公告)号:US11208821B1

    公开(公告)日:2021-12-28

    申请号:US17222395

    申请日:2021-04-05

    发明人: Olaf Mjelde

    IPC分类号: E04H4/12

    摘要: A sump drain for installation in a surface of a swimming pool or spa, the sump drain comprising an annular chamber having a contiguous annular top opening, a plurality of outlet ports, an inner and an outer water stop, a plurality of diverter plates configured to removeably couple to an inner surface of the annular chamber, each diverter plate comprising two opposed ends and a bottom surface having a plurality of louvers, wherein one diverter plate is placed over each outlet port, and a grid cover configured to cover the chamber, the grid cover having a multiplicity of openings. The diverter plate can be curved along its length and have a central opening, optionally in the shape of a cross.

    Pipeline filter
    26.
    发明授权

    公开(公告)号:US11154801B1

    公开(公告)日:2021-10-26

    申请号:US17154527

    申请日:2021-01-21

    发明人: Olaf Mjelde

    摘要: A pipeline filter assembly comprising a base assembly, an outer wall, and a lid assembly. The outer wall has a lower end portion and an upper end portion, wherein the upper end portion comprises a lower collar, and the lower collar comprises at least one lock notch spaced around an exterior surface thereof. The lid assembly is configured to couple to the lower collar of the outer wall. The lid assembly has an upper collar configured to threadedly mate with the lower collar. The upper collar has at least one housing that projects from the upper collar, the housing having an interior surface, and at least one biasing clip pivotally mounted within the housing for releasable engagement with the lock notch. A pair of pipeline filter assemblies, wherein at least one connection plate is used.

    Ozone injector device
    27.
    发明授权

    公开(公告)号:US11084745B1

    公开(公告)日:2021-08-10

    申请号:US17187505

    申请日:2021-02-26

    发明人: Olaf Mjelde

    摘要: An ozone injector device comprising a housing, a corona tube disposed within the housing and configured to generate ozone, a check-valve having a first end removably coupled to the water passageway and having a valve seat and a second end configured to receive ozone, the second end having a cavity with a movable float contained therein, an ozone inlet fitting removably coupled to the second end of the check-valve, the ozone inlet being in fluid communication with the corona tube via a corona discharge tube such that ozone entering the water passageway through the ozone inlet must pass through the check valve, and a spring-loaded clearing piston positioned to move into and out of the water passageway directly opposite the ozone inlet, the clearing piston being biased upwards, towards to the ozone inlet, and configured to prevent flow of ozone into the water passageway.